Self-sealing packing-case.



Patented May 16, 1916.

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lziionied M11318, 1916.

Serial No 82,924.

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for the locking of said cover and bottom in place, fulfil the function of rigid reinforcement which prevents the cover from buckling or bending. In addition to this the strips secured to the sides of the case and having an inwardly bent edge form strengthening reinforcements for the case Which will prevent the box sides from bulging or being pressed out of shape.

The advantages to be considered are thus very material the feature of lessening risk in transportation and loss through various causes, the locking device is very simple re quires no skill whatever in securing the cover, it being merely necessary to insert the cover and push it into place and when pressed home will lock automatically. A great saving in time of a packer is thus obviated and the extra expense of wood, bales, etc. is avoided, as well as presenting a much better appearance outside with no projecting portion and a smooth interior which will not interfere with the goods. The lock strips in the casing are arranged preferably a short distance in from the edge so that When the covers are placed in position they will be ar 'anged a short distance from the outer edge of the sides of the casing. thus adding considerably to the strength and providing an edge for the shippers handiing the boxes to grip the same so that they will not be as liable to let them fall.

\Vhat, I claim as my invention is 1. A packing case of thin flexible material open at the end, reinforcing strips of sheet. metal secured to the inner walls of said casing and extending transversely thereof adjacent the open end, and locking means projecting from the inner surface of said cover to engage said strips, when the cover is in place in inseparable locking engagement.

2. A packing case of thin flexible material open at the end, reinforcing strips of sheet metal secured to the inner walls of said case and extending transversely thereof and adjacent to the open end having the outward free edges formed in hook shape, a cover adapted to close said case, and hooked members secured to the inner surface of said cover adapted to extend into said case to engage the hook-shaped edges of the locking strips within the case in inseparable locking engagei'nent.

3. A packing case of this flexible material open at the end, sheet metal reinforcing strips secured to the inner walls of said case adjacent to the open end and extending transversely thereof, said strips having their outward free edges bent into hook shape, a cover adapted to'be inserted into the open end of said case, and sheet metal reinforcing strips projecting inwardly therefrom, said cover strips having their free edges formed in hook shape to engage the strips within the case in inseparable locking engagement.

4. A packing case of thin flexible material open at the end, a cover having flanges adapted to extend into the case, said flanges having inwardly turned hooked extremities, and sheet metal strips secured to the inner walls of the caseadjacent the open end and extending transversely thereof, said strips being formed with outwardly turned hooked edges adapted to spring into locking engagement: with the hooked cover flanges and to seal the cover in place.

5. A packing case of thin flexible material open at the end, a cover adapted to be inserted in said open end and having right angularly arranged flanges extending around the edges, said flanges having their inner edges formed with inwardly turned hook shaped extremities, sheet metal strips secured to each of the inner walls adjacent to the open end and extending transversely thereof and substantially the entire width of said walls, said strips having the outward edges bent outwardly toward the wall of the case in hook shape to engage the cover flange hooks in inseparable locking engagement.

Signed at the city of Toronto, county of York, Ontario, Canada, this 2nd day of March 1914.

THOMAS H. GOLDRING. WVitnesses D. S. TovELL, E. HERON. 

